Direct resource recovery from sewage using a combined system of anaerobic-aerobic biological treatment and food production

A combined system of an anaerobic baffled reactor (ABR), a down-flow hanging sponge (DHS) reactor, an aquarium tank (AT), and a constructed wetland (CWL) was proposed as a new concept for sewage treatment. The ABR and DHS reactor, AT, and CWL were applied for biological sewage treatment, bioassay, a...

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Autores principales:	Daisuke Tanikawa, Kenta Shimomura, Daisuke Motokawa, Yuya Itoiri, Zen-Ichiro Kimura
Formato:	article
Lenguaje:	EN
Publicado:	IWA Publishing 2021
Materias:	constructed wetland down-flow hanging sponge reactor food chain food production sewage treatment Environmental technology. Sanitary engineering TD1-1066
Acceso en línea:	https://doaj.org/article/86120b7b983d4fa993548351f7dce499
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spelling	oai:doaj.org-article:86120b7b983d4fa993548351f7dce4992021-11-05T21:16:52ZDirect resource recovery from sewage using a combined system of anaerobic-aerobic biological treatment and food production1751-231X10.2166/wpt.2021.056https://doaj.org/article/86120b7b983d4fa993548351f7dce4992021-10-01T00:00:00Zhttp://wpt.iwaponline.com/content/16/4/1206https://doaj.org/toc/1751-231XA combined system of an anaerobic baffled reactor (ABR), a down-flow hanging sponge (DHS) reactor, an aquarium tank (AT), and a constructed wetland (CWL) was proposed as a new concept for sewage treatment. The ABR and DHS reactor, AT, and CWL were applied for biological sewage treatment, bioassay, and nutrient removal with food production, respectively. Killifishes and tomatoes were cultivated in the AT and CWL, respectively. In the ABR, 81.3% of total chemical oxygen demand and 76.5% of total biochemical oxygen demand were removed at 5.1 h of hydraulic retention time (HRT). Most remaining organic matter and 47.1% of ammonia were removed in the DHS reactor. In the CWL, 97.0% of total inorganic nitrogen and 78.6% of phosphate were removed with 3.87 kg/m2 of tomatoes producing yield at 4.4 days of HRT. In addition, anaerobic ammonium-oxidizing bacteria Candidatus Scalindua and ammonia-oxidizing bacteria Nitrospira and Nitorosococcus were considered as contributors to nitrogen removal in the CWL. The final effluent's water can be utilized as recycled water by installation of sand filtration and disinfection processes. Therefore, the proposed system can be applied as a low-energy, low-cost sewage treatment system with direct resource recovery. HIGHLIGHTS Anaerobic baffled reactor removed most of organic matters in sewage directly.; Foods for killifishes were automatically fed by sewage treatment.; Nutrients in sewage were consumed by tomatoes in constructed wetland.; Proposed system achieved direct resource recovery from sewage.;Daisuke TanikawaKenta ShimomuraDaisuke MotokawaYuya ItoiriZen-Ichiro KimuraIWA Publishingarticleconstructed wetlanddown-flow hanging sponge reactorfood chainfood productionsewage treatmentEnvironmental technology. Sanitary engineeringTD1-1066ENWater Practice and Technology, Vol 16, Iss 4, Pp 1206-1214 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	constructed wetland down-flow hanging sponge reactor food chain food production sewage treatment Environmental technology. Sanitary engineering TD1-1066
spellingShingle	constructed wetland down-flow hanging sponge reactor food chain food production sewage treatment Environmental technology. Sanitary engineering TD1-1066 Daisuke Tanikawa Kenta Shimomura Daisuke Motokawa Yuya Itoiri Zen-Ichiro Kimura Direct resource recovery from sewage using a combined system of anaerobic-aerobic biological treatment and food production
description	A combined system of an anaerobic baffled reactor (ABR), a down-flow hanging sponge (DHS) reactor, an aquarium tank (AT), and a constructed wetland (CWL) was proposed as a new concept for sewage treatment. The ABR and DHS reactor, AT, and CWL were applied for biological sewage treatment, bioassay, and nutrient removal with food production, respectively. Killifishes and tomatoes were cultivated in the AT and CWL, respectively. In the ABR, 81.3% of total chemical oxygen demand and 76.5% of total biochemical oxygen demand were removed at 5.1 h of hydraulic retention time (HRT). Most remaining organic matter and 47.1% of ammonia were removed in the DHS reactor. In the CWL, 97.0% of total inorganic nitrogen and 78.6% of phosphate were removed with 3.87 kg/m2 of tomatoes producing yield at 4.4 days of HRT. In addition, anaerobic ammonium-oxidizing bacteria Candidatus Scalindua and ammonia-oxidizing bacteria Nitrospira and Nitorosococcus were considered as contributors to nitrogen removal in the CWL. The final effluent's water can be utilized as recycled water by installation of sand filtration and disinfection processes. Therefore, the proposed system can be applied as a low-energy, low-cost sewage treatment system with direct resource recovery. HIGHLIGHTS Anaerobic baffled reactor removed most of organic matters in sewage directly.; Foods for killifishes were automatically fed by sewage treatment.; Nutrients in sewage were consumed by tomatoes in constructed wetland.; Proposed system achieved direct resource recovery from sewage.;
format	article
author	Daisuke Tanikawa Kenta Shimomura Daisuke Motokawa Yuya Itoiri Zen-Ichiro Kimura
author_facet	Daisuke Tanikawa Kenta Shimomura Daisuke Motokawa Yuya Itoiri Zen-Ichiro Kimura
author_sort	Daisuke Tanikawa
title	Direct resource recovery from sewage using a combined system of anaerobic-aerobic biological treatment and food production
title_short	Direct resource recovery from sewage using a combined system of anaerobic-aerobic biological treatment and food production
title_full	Direct resource recovery from sewage using a combined system of anaerobic-aerobic biological treatment and food production
title_fullStr	Direct resource recovery from sewage using a combined system of anaerobic-aerobic biological treatment and food production
title_full_unstemmed	Direct resource recovery from sewage using a combined system of anaerobic-aerobic biological treatment and food production
title_sort	direct resource recovery from sewage using a combined system of anaerobic-aerobic biological treatment and food production
publisher	IWA Publishing
publishDate	2021
url	https://doaj.org/article/86120b7b983d4fa993548351f7dce499
work_keys_str_mv	AT daisuketanikawa directresourcerecoveryfromsewageusingacombinedsystemofanaerobicaerobicbiologicaltreatmentandfoodproduction AT kentashimomura directresourcerecoveryfromsewageusingacombinedsystemofanaerobicaerobicbiologicaltreatmentandfoodproduction AT daisukemotokawa directresourcerecoveryfromsewageusingacombinedsystemofanaerobicaerobicbiologicaltreatmentandfoodproduction AT yuyaitoiri directresourcerecoveryfromsewageusingacombinedsystemofanaerobicaerobicbiologicaltreatmentandfoodproduction AT zenichirokimura directresourcerecoveryfromsewageusingacombinedsystemofanaerobicaerobicbiologicaltreatmentandfoodproduction
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Direct resource recovery from sewage using a combined system of anaerobic-aerobic biological treatment and food production

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